Jefferson   County ID United States

County FIPS 16051
Largest City Rigby
State Idaho
Latitude 43.8201
Longitude -112.3113
Population 33,154
Density 30.31 people per square mile
Time Zone America/Boise
  • All demographic data comes from the 2024 American Community Survey (5-year study).
  • Learn more about each field.
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Household Income

Median household: $86,679
Median individual: $35,765

Race

Mode: 87.5% White

Gender

 51.2% male 

Rent

  $1138 / month  

Median house value: $396,786.0

Age

Median: 32.8 years old

Education

With at least college degree: 27.4%
With STEM degree: 45.6%

Marital Status

 63.5% married 

Never married: 23.8%

Labor Force Participation

 66.1% working 

Unemployed: 2.7%

Average Family Size

 3.58 people 

Commute Time

 25.1 minutes 

Health Care

 7.8% uninsured 

Poverty

 9.7%

All data comes from the SimpleMaps US Counties Database, 2026.

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